Dynamic mechanical behaviors of interbedded marble subjected to multi-level uniaxial compressive cyclic loading conditions: An insight into fracture evolution analysis

2021 ◽  
Vol 241 ◽  
pp. 107410
Author(s):  
Y. Wang ◽  
Y.Z. Hu ◽  
S.H. Gao
Keyword(s):  
Cyclic Loading ◽  
Loading Conditions ◽  
Mechanical Behaviors ◽  
Dynamic Mechanical ◽  
Fracture Evolution ◽  
Evolution Analysis ◽  
Multi Level ◽  
Insight Into

scholarly journals Mechanical Behavior, Energy Release, and Crack Distribution Characteristics of Water-Saturated Phyllite under Triaxial Cyclic Loading

2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Yang Zhou ◽  
Shengrui Su ◽  
Peng Li
Keyword(s):  
Cyclic Loading ◽  
Mechanical Behavior ◽  
Energy Release ◽  
Damage Variable ◽  
Dissipated Energy ◽  
Distribution Characteristics ◽  
Mechanical Behaviors ◽  
Dynamic Mechanical ◽  
Crack Distribution ◽  
Water Saturated

Many geological engineering hazards are closely related to the dynamic mechanical behaviors of rock materials. However, the dynamic mechanical behaviors of phyllite are less studied. In this study, we have carried out a series of triaxial cyclic tests on dry and water-saturated phyllite by employing the MTS 815 servohydraulic testing system and AE testing equipment to reveal the mechanical behavior, energy release, and crack distribution characteristics of phyllite. Results show that phyllite is a water-sensitive rock. Water and cyclic loading substantially affect the compressive strength, crack damage stress, deformation parameters, dilatancy, energy release, and crack distribution characteristics of phyllite. Furthermore, based on the dissipated energy, a new damage variable for phyllite is established. The critical damage variable for phyllite is approximately 0.80; this variable can be used as an index to predict the failure of phyllite. The water saturation effect of phyllite is very obvious; that is, it results in the weakness of mechanical properties of phyllite and changes the AE energy release and crack distribution characteristics of phyllite. This research can provide guidance for engineering construction and disaster prevention and control.

Determination of the Cyclic Properties of Silty Sands

2018 ◽  
pp. 416-445
Author(s):  
Eyyüb Karakan ◽  
Selim Altun
Keyword(s):  
Cyclic Loading ◽  
Pore Water ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Triaxial Tests ◽  
Loading Conditions ◽  
Systematic Testing ◽  
Geotechnical Problems ◽  
Insight Into

Liquefaction may be triggered by cyclic loading on saturated silty sands, which is responsible of severe geotechnical problems. Development of excess pore water pressure in soil results in a liquid-like behavior and may be the reason of unavoidable superstructural damage. In this study, in order to investigate the behavior of saturated silty sands exposed to cyclic loading under undrained conditions, a systematic testing program of stress-controlled cyclic triaxial tests was performed on specimens of different silt contents, under different loading conditions and environment. The effect of parameters such as silt content on the liquefaction behavior of specimens was studied. Pore water pressure and shear strain curves were obtained for the silty sands. Furthermore, the boundaries existing in the literature on sands are compared with the results current research, on silty sands. Conclusively, the outcomes of this study were useful to develop insight into the behavior of clean and silty sands under seismic loading conditions.

scholarly journals Effect of fatigue loading-confining stress unloading rate on marble mechanical behaviors: An insight into fracture evolution analyses

2020 ◽  
Vol 12 (6) ◽  
pp. 1249-1262 ◽  
Author(s):  
Yu Wang ◽  
Dongqiao Liu ◽  
Jianqiang Han ◽  
Changhong Li ◽  
Hao Liu
Keyword(s):  
Fatigue Loading ◽  
Mechanical Behaviors ◽  
Confining Stress ◽  
Fracture Evolution ◽  
Unloading Rate ◽  
Insight Into

Physical and mechanical behaviors of thermally modified rubberwood glulam beam under sustained cyclic loading

2020 ◽  
Vol 52 (3) ◽  
pp. 298-312
Author(s):  
T. Pulngern ◽  
T. Udtaranakron ◽  
K. Chanto
Keyword(s):  
Cyclic Loading ◽  
Mechanical Behaviors ◽  
Glulam Beam

scholarly journals In situ monitoring of dislocation, twinning, and detwinning modes in an extruded magnesium alloy under cyclic loading conditions

2021 ◽  
Vol 806 ◽  
pp. 140860
Author(s):  
Di Xie ◽  
Zongyang Lyu ◽  
Yuan Li ◽  
Peter K. Liaw ◽  
Huck Beng Chew ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Cyclic Loading ◽  
In Situ Monitoring ◽  
Loading Conditions
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